Nipple shield



FIG. 1 is a perspective of my new nipple shield;

FIG. 2 is a front elevation thereof;

FIG. 3 is a rear elevation thereof;

FIG. 4 is a right side elevation thereof;

FIG. 5 is a left side elevation thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines showing thirteen (13) circular elements on the top surface of the nipple shield illustrate environmental structure and form no part of the claimed design. 

The ornamental design for a nipple shield, as shown and described. 